[ImgBot] Optimize images

*Total -- 182.22kb -> 119.34kb (34.51%)

/mobile/iosApp/iosApp/Assets.xcassets/AppIcon.appiconset/app-icon-1024.png -- 65.71kb -> 19.80kb (69.86%)
/.github/images/logo.png -- 90.06kb -> 74.59kb (17.18%)
/mobile/composeApp/src/androidMain/res/mipmap-xxxhdpi/ic_launcher.png -- 10.40kb -> 9.54kb (8.33%)
/mobile/composeApp/src/androidMain/res/mipmap-xxhdpi/ic_launcher.png -- 7.72kb -> 7.27kb (5.88%)
/mobile/composeApp/src/androidMain/res/mipmap-hdpi/ic_launcher.png -- 3.51kb -> 3.43kb (2.14%)
/mobile/composeApp/src/androidMain/res/mipmap-xhdpi/ic_launcher.png -- 4.81kb -> 4.71kb (2.07%)

Signed-off-by: ImgBotApp <[e-mail]>